Alert archive / Texas / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 127, NWS Austin/San Antonio, TX

December 23, 2002Edwards County, Texas

NWS Austin/San Antonio, TX issued this severe thunderstorm warning at Dec 23, 2002, 4:28 PM CST for Edwards County, Texas. It was in force for 62 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Dec 23, 2002, 4:28 PM CST (22:28 UTC)
Expired: Dec 23, 2002, 5:30 PM CST
In force: 62 min
Issued by: NWS Austin/San Antonio, TX
Area: Counties, with a storm outline in the text

County Edwards County, TX

The radar

The Laughlin AFB radar (KDFX), 81 km from the middle of the area, began a volume at 22:25 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Del Rio, TX (KDRT), launched 12:00Z, 10.5 hours before the alert went out and 86 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 122 J/kg
Mixed-layer CIN: -129 J/kg
Mixed-layer LCL: 662 m above ground
0-6 km bulk shear: 64 kt
0-1 km storm-relative helicity: 187 m²/s²
0-3 km storm-relative helicity: 203 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.4

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

942 
WUUS54 KEWX 232228
SVRSAT
TXC137-232330-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
428 PM CST MON DEC 23 2002

THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR THE FOLLOWING COUNTIES IN TEXAS...
  EDWARDS

* UNTIL 530 PM CST

* AT 428 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 14 MILES SOUTHWEST OF ROCKSPRINGS...OR ABOUT 46
  MILES NORTHEAST OF DEL RIO...MOVING NORTHEAST AT 20 MPH.

* THE SEVERE THUNDERSTORM WILL BE...
  NEAR ROCKSPRINGS AT 500 PM

IF SEVERE WEATHER APPROACHES YOUR AREA...GO INSIDE A STURDY SHELTER
AWAY FROM CREEK BEDS AND OTHER FLOOD-PRONE AREAS. REMEMBER...A SEVERE
THUNDERSTORM CAN PRODUCE LARGE DAMAGING HAIL...DAMAGING WINDS IN
EXCESS OF 55 MPH...DEADLY LIGHTNING...AND VERY HEAVY RAIN.

LAT...LON 2986 10050 2973 10035 3028 9977 3027 10048

$$

The office that day

Everything else NWS Austin/San Antonio, TX issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Dec 23, 2:50 AM CST	Severe Thunderstorm Warning	EWX	Bandera, Bexar, Kendall	25 min
Dec 23, 3:49 AM CST	Severe Thunderstorm Warning	EWX	Blanco, Burnet, Llano	41 min
Dec 23, 4:03 AM CST	Severe Thunderstorm Warning	EWX	Hays, Travis	42 min
Dec 23, 6:07 AM CST	Tornado Warning	EWX	Hays, Travis	53 min
Dec 23, 7:00 AM CST	Tornado Warning	EWX	Travis, Williamson	30 min
Dec 23, 7:29 AM CST	Tornado Warning	EWX	Williamson	31 min
Dec 23, 7:43 AM CST	Tornado Warning	EWX	DeWitt	47 min
Dec 23, 8:08 AM CST	Severe Thunderstorm Warning	EWX	Fayette, Lavaca	52 min
Dec 23, 8:58 AM CST	Severe Thunderstorm Warning	EWX	Fayette	47 min
Dec 23, 9:03 AM CST	Severe Thunderstorm Warning	EWX	Lee	27 min
Dec 23, 9:16 AM CST	Tornado Warning	EWX	Fayette	29 min
Dec 23, 4:49 PM CST	Severe Thunderstorm Warning	EWX	Real	56 min
Dec 23, 5:06 PM CST	Tornado Warning	EWX	Kerr	24 min
Dec 23, 5:12 PM CST	Tornado Warning	EWX	Kerr	18 min
Dec 23, 5:23 PM CST	Severe Thunderstorm Warning	EWX	Kerr	52 min
Dec 23, 5:26 PM CST	Severe Thunderstorm Warning	EWX	Medina	64 min
Dec 23, 5:43 PM CST	Severe Thunderstorm Warning	EWX	Bexar	62 min

Nearby

Severe Thunderstorm Warnings in Texas, 2002 Every severe thunderstorm warning in 2002

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.